When U.S. civilian airplanes were spotted in late 2002 taking trips to and from Andrews Air Force Base, and making stops in Afghanistan and Guantanamo Bay, journalists and plane-spotters wondered what was going on. It soon became clear that these planes were part of the largest covert operation since the Cold War era.

Called extraordinary rendition, the practice involves CIA officials or contractors kidnapping people and sending them to secret prisons around the world where they are held and often tortured, either at the hands of the host-country's government or by CIA personnel themselves.

On Sept. 6, after a long period of official no-comments, President Bush acknowledged the program's existence. But the extent of its operations has yet to be publicly disclosed.

How extensive is it? Trevor Paglen, an expert in clandestine military installations, and A.C. Thompson, an award-winning journalist for S.F. Weekly, spent months tracking the CIA flights and the businesses behind them. What they found was a startlingly broad network of planes (including the Gulfstream jet belonging to Boston Red Sox co-owner Phillip Morse), shell companies, and secret prisons around the world. Perhaps the most disturbing revelation of their new book "Torture Taxi: On the Trail of the CIA's Rendition Flights" is the collusion of everyday Americans in this massive CIA program. From family lawyers who bolster the shell companies, to an entire town in Smithfield, N.C., that hosts CIA planes and pilots, "Torture Taxi" is the story of the broad reach of extraordinary rendition, and, as Hannah Arendt coined the phrase, the banality of evil.

The kind of people we're talking about are Dean Plakias in Dedham, Mass., outside of Boston. He is not a high-profile guy. He's a family lawyer with a small practice and how he ended up in this world is still a mystery. This is an American story, a neighborhood story. When we started looking at all the front companies the CIA had erected, we realized our neighbors were helping the CIA set up these structures. These are family lawyers in suburban Massachusetts and Reno, Nevada. People in our communities are doing dirty work for the CIA. This is not just people being snatched up from one faraway country and taken to a country that's even farther away.?

We went to Nevada, Massachusetts and New York to track down the front companies. We went to Beale Air force base in Northern California to track U2 spy planes. We went to Smithfield, N.C, which is home to the airfields that many of these airplanes fly out of. Then we went to Kabul and Gardez, Afghanistan.

But the two most interesting places were the rural town of Smithfield and Kinston down the road, where there's another airstrip that a company called Aero Contractors uses. Aero is the company that flies many of these missions for the CIA. We went there and talked to a pilot who had worked for Aero about exactly what they did and how the program worked. There's nothing random about the CIA using this rural area in North Carolina. If you wanted to shut up a secret operation, this is where you would do it. It's a god, guns, and guts area.

What you start to figure out by spending time in Smithfield is that a lot of people know about the company and have at least an inkling of what goes on at the airport. Most don't want to talk about it and don't take a critical view of it. Folks we met there framed the debate within this religious discourse. The activists that we talked to were god-fearing devout Christians who felt like this was not what they signed up for as religious people, that it violates the religious tenets they adhere to. Interestingly, folks on the other side of the debate seem to be coming from a similar place, but just coming to a different conclusion. The subject of whether or not torture was permitted by the Bible was discussed in church there - and many congregants believed it was.